PEOPLE Magazine 40th Anniversary

Look Who's Turning 40

From Leonardo DiCaprio and Victoria Beckham to Hello Kitty and Happy Days, see who's celebrating the milestone with PEOPLE

POP ROCKS

Candy that crackles and fizzles in your mouth? How could it not become an instant favorite with kids! Today, these powerful packets are still as popular as ever, even with adults, and are available in flavors ranging from strawberry to green apple to chocolate. OK, but what makes Pop Rocks pop? The tiny pieces of hard candy are filled with carbon dioxide, which is released when it comes into contact with moisture. You're welcome!